The PZU22B is a single Zener diode from Nexperia USA Inc. It is part of the PZU22 series and has a voltage rating of 22V. This diode is designed for use in various applications such as voltage regulation, surge protection, and signal conditioning. It has a power rating of 310mW and a maximum forward voltage of 1.1V at a current of 100mA. The PZU22B is surface mountable and comes in an SC-90, SOD-323F package. It has a tolerance of ±5% and a maximum reverse leakage current of 50nA at a voltage of 17V. This diode is unaffected by REACH regulations and has an ECCN classification of EAR99. With its low impedance of 25 Ohms, the PZU22B provides reliable and efficient performance in electronic circuits.